10/13/2025
At an Australian university, Professor Phelps ran an experiment that’s still eye-opening today.
For a month, he divided students into teams of four and gave them 45 minutes to solve management problems. The best team would win a $100 prize.
What the students didn’t know was that some groups had “plants” — actors instructed to play very specific roles:
• The Indifferent One – lounged back, feet on the table, glued to their phone.
• The Cynic – interrupted with cutting sarcasm: “Are you serious?” or “You’ve clearly never managed anyone before.”
• The Pessimist – looking like they’d just lost their best friend, muttering that the task was hopeless and the team couldn’t possibly succeed.
The results? Even when the other three members were highly capable and motivated, the negative behavior of just one person dragged down the group’s overall performance by 30–40%.
The conclusion was striking: a team’s effectiveness depends less on how many strong performers it has — and more on whether it carries even a single toxic presence.
Lesson for leaders and HR managers:
The real challenge isn’t just supporting high performers. It’s removing those who consistently drain energy and derail collaboration. Strong employees will thrive on their own, as long as there isn’t one person poisoning the team dynamic.
— A. Moreynis
😍❤️🙏
